Expansible bearing.



C. VAN MIDDLESWORTH.

EXPANSIBLE BEARING. APPLICATION FILED-Nov'. 23, 190s.

Patented June 28, 1910.

| l .Illllli-.IllliIl-Inillllnl CHARLES VAN MIDDLESWORTH, OF BROOKLYN, NEW YORK, ASSIGNOR TO VAN DYCK GRAVURE COMPANY, 0F NEW YORK, N. Y.

EXPANSIBLE BEARING.

Application filed November 23, 1908.

To all 'whom it may concern:

Be it known that I, CHARLES VAN MID- DLnswon'rH, of Brooklyn, in the county of Kings and in the State of New York, have invented a certain new and useful Improvement in Expansible Bearings, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to an expansible bearing, and especially to a roller bearing of an expansible nature which is adapted to be used in printing presses of the cylinder t-ype, although my bearing is capable of use in machines of any character to which an expansible bearing might be advantageously adapted.

In the art of printing, it is necessary to adjust the relative positions of the printing cylinder and the impression cylinder to a very exact degree, and to so construct the parts that they may be maintained in this carefully adjusted position. In order to effect this end, I have provided one of said cylinders with a pair of roller bearings, one of said bearings being loosely carried by each end of the cylinder. These bearings are so constructed that they may be readily at any moment adjusted so as to cause them to expand, thus increasing their circumference and diameter, and thus moving the cylinders farther apart or in such a manner that the reverse movement can be carried out.

In the accompanying drawings, I have shown one embodiment of my invention, and therein* Figure l is a plan view partly in sect-ion of a roller hearing carried upon a shaft or a portion thereof of one of the cylinders in a printing machine; and Fig. 2 is a side View of the same partly in section.

In the drawings, l is a sleeve which is adapted to be iixedly attached to the shaft of one of the cylinders in a printing machine, said sleeve carrying at one end a gear 2 for driving the shaft or cylinder and at the other end an annular guard 3 attached to the sleeve l by means of screws 4. The guard 3 is designed to retain an annular bearing member 5 upon the sleeve l, upon which it is loosely carried. The annular bearing member 5 is screw-threaded at G at one end thereof, and is provided with a conical surface 7 at the other end. The screwthread 6 is designed to carry an annular Specification of Letters Patent.

Patented June 28, 1910.

Serial No. 464,094.

complementarily screw-threaded vmember 8 which has a series of holes 9 in its periphery, so as to permit the same to be readily rotated by a tool of the ordinary character. Situated upon the conical surface 7 and adjacent to the inner surface of the annular member 8 there is a wedging ring l0 which is split in a diagonal direction at 1l for a purpose to be hereinafter described. The inner surface of thel wedging ring l0 is beveled to fit closely over the conical surface 7, while the outer surface 12 of the wedging ring is cylindrical to provide a proper bearing surface for the other cylinder of the printing machine.

In the operation of the device, it will be seen that when a proper tool is caused to engage one of the holes 9, the annular member 8 may be rotated as a consequence, thereby permitting the movement of the wedging ring l() so as to either cause the increase or decrease of the diameter of the bearing, as may be desired. The ring being diagonally split at 1l permits the variation of the diameter of the bearing referred to. It will be seen that while this is a very simple construction, it is, nevertheless, a very effective one and one that is easy to operate to effect an extremely accurate adjustment. of the diameter of the bearing.

While I have described my invention above in detail, I Wish it to be understood that many changes in the details and applications of my invention to different structures, may be effected without departing from the spirit thereof.

I claim l. In a device of the character described, the combination of a shaft, a bearing member loosely and rotatably carried thereby having a wedging surface, and an integral split ring having a wedging surface coper` ating with the wedging surface of the bearing member to increase the diameter of the bearing.

2. In a device of the character described, the combination of a shaft, a bearing member loosely and rotatably carried thereby having an outer wedging surface, and an integral split ring having an inner wedging surface coperating with the outer wedging surface of the bearing member to increase the diameter of the bearing.

3. In a device of the character described, the combination of a shaft, a bearing member loosely carried thereby having a Wedg ing surface, and an integral split ring having a Wedging surface coperating with the Wedging surface of the bearing member to increase the diameter of the bearing, said ring being split at an angle of substantially 45 to the aXis thereof.

4. In a device of the character described7 the combination of a shaft, a bearing member loosely carried thereby having a Wedging surface and .an integral split ring having a Wedging surface coperating With the Wedging surface of the bearing member to increase the diameter of the bearing member, said ring being split at an angle 01": substantially forty-five degrees to the axis thereof. f

In testimony that I claim the foregoing I have hereunto set my hand.

GHAR'LES VAN MIDDLESWORTH.

Witnesses:

CHARLES M. SAALBURG, A. R. RICHARDS. 

